Part Number 705-51-20640
Pump Type Gear pump (positive displacement)
Displacement ~30 cm³/rev (typical)
Rated Pressure 21 MPa (3,046 psi)
Maximum Pressure 25 MPa (3,626 psi)
Rated Speed 1,800–2,200 rpm
Maximum Speed 2,500 rpm
Rotation Direction Clockwise (CW, from drive end)
Volumetric Efficiency ≥88%
Mechanical Efficiency ≥85%
Total Efficiency ≥75%
Fluid Type Hydraulic oil (Komatsu L-HM 46, ISO VG 46)
Fluid Temperature Range -20°C to +90°C (-4°F to 194°F)
Viscosity Range 15–400 cSt (at 40°C)
Inlet/Outlet Port Size SAE 12 (1.5" NPT)
Mounting Type SAE flange (direct mount to transmission or engine)
Weight ~22 kg (48.5 lbs)
